<template>
	<view v-if="goods_info.goodsName" class="goods-detail-container">
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
			<swiper-item v-for="(item,i) in goods_info.pics" :key="i">
				<image :src="item.picsBig" @click="preview(i)"></image>
			</swiper-item>
		</swiper>
		<!-- 商品信息区域 -->
		<view class="goods-info-box">
			<!-- 商品价格 -->
			<view class="price">￥{{goods_info.goodsPrice}}</view>
			<!-- 商品主体区域 -->
			<view class="goods-info-body">
				<!-- 商品名字 -->
				<view class="goods-name">{{goods_info.goodsName}}</view>
				<!-- 商品收藏 -->
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<!-- 运费 -->
			<view class="yf">快递：免运费</view>
		</view>
		<!-- 富文本 -->
		<rich-text :nodes="goods_info.goodsIntroduce"></rich-text>
		<!-- 商品导航区域 -->
		<view class="goods_nav">
		  <!-- fill 控制右侧按钮的样式 -->
		  <!-- options 左侧按钮的配置项 -->
		  <!-- buttonGroup 右侧按钮的配置项 -->
		  <!-- click 左侧按钮的点击事件处理函数 -->
		  <!-- buttonClick 右侧按钮的点击事件处理函数 -->
		  <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
		</view>
	</view>
</template>

<script>
	import {mapState,mapMutations,mapGetters} from 'vuex'
	export default {
		computed: {
			...mapState('m_cart',['cart']),
			...mapGetters('m_cart',['total'])
		},

		watch:{
			total:{
				handler(newVal){
					const findResult = this.options.find(x => x.text === '购物车')
						if(findResult){
						findResult.info  = newVal
				}
			},
			// immediate 属性用来声明此侦听器，是否在页面初次加载完毕后立即调用
			 immediate: true
			}
		},
		data() {
			return {
				goods_info: {},
				 // 左侧按钮组的配置对象
				    options: [{
				      icon: 'shop',
				      text: '店铺'
				    }, {
				      icon: 'cart',
				      text: '购物车',
				      info: 0
				    }],
				    // 右侧按钮组的配置对象
				    buttonGroup: [{
				        text: '加入购物车',
				        backgroundColor: '#ff0000',
				        color: '#fff'
				      },
				      {
				        text: '立即购买',
				        backgroundColor: '#ffa200',
				        color: '#fff'
				      }
				    ]
			};
		},
		onLoad(options) {
			const goods_id = options.goods_id
			this.getGoodsDetail(goods_id)
		},
		methods:{
			...mapMutations('m_cart',['addToCart']),
		async getGoodsDetail(goods_id){
				const { data: res} = await uni.$http.get('/api/public/goods/detail',{ goods_id })
				if(res.code !== 200) return uni.$showMsg()
				res.data.goodsIntroduce = res.data.goodsIntroduce
				.replace(/<img /g, '<img style="display:block;"')
				.replace(/webp/g, 'jpg')
				this.goods_info = res.data
			},
			// 预览大图
			preview(i){
				uni.previewImage({
					current: i,
					urls: this.goods_info.pics.map((x) => x.picsBig)
				})
			},
			onClick(e){
				if(e.content.text === '购物车'){
					// 切换到购物车页面
					uni.switchTab({
						url: '/pages/cart/cart'
					})
				}
			},
			buttonClick(e){
				if(e.content.text === '加入购物车'){
					
					      // 2. 组织一个商品的信息对象
					      const goods = {
					         goodsId: this.goods_info.goodsId,       // 商品的Id
					         goodsName: this.goods_info.goodsName,   // 商品的名称
					         goodsPrice: this.goods_info.goodsPrice, // 商品的价格
					         goodsCount: 1,                           // 商品的数量
					         goodsSmallLogo: this.goods_info.goodsSmallLogo, // 商品的图片
					         goodsState: true                         // 商品的勾选状态
					      }
					
					      // 3. 通过 this 调用映射过来的 addToCart 方法，把商品信息对象存储到购物车中
					      this.addToCart(goods)
				}
			},
		}
	}
</script>

<style lang="scss">
.swiper{
	height: 750rpx;
	  image {
	    width: 100%;
	    height: 100%;
	  }
}
.goods-info-box{
	padding: 10px;
	padding-right: 0;
	.price{
		color: #C00000;
		font-size: 18px;
		margin: 10px 0;
	}
	.goods-info-body{
		display: flex;
		justify-content: space-between;
		.goods-name{
			font-size: 13px;
			margin-right: 10px;
		}
		.favi{
			width: 120px;
			font-size: 12px;
			display: flex;
			flex-direction: column;
			align-items: center;
			justify-content: center;
			border-left: 1px solid #efefef;
			color: gray; //灰色
		}
	}
	.yf{
		font-size: 12px;
		color: gray;
		margin: 10px 0;
	}
}
.goods_nav {
  // 为商品导航组件添加固定定位
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
.goods-detail-container{
	padding-bottom: 50px;
}
</style>
